Categories of requesters are catalogued in the system, but they are extremely general -- for example, member of the public, corporation, and so on. However, it is impossible to identify the requester specifically. Of course, for a member of the public or a corporation, we do not know who is making the request. If it's the media, we are unaware of which media outlet or company is involved, just as we do not know the identity of the reporter making the request.
On October 4th, 2006. See this statement in context.